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CE Smith U-Bolt Kit for Mounting 5.2K to 7K, Round Trailer Axles - 7" Long U-Bolts - Zinc
CE Smith

CE Smith U-Bolt Kit for Mounting 5.2K to 7K, Round Trailer Axles - 7" Long U-Bolts - Zinc

Part Number: CE23003
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Mount your round, 3" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers. Great Prices for the best trailer suspension parts from CE Smith. CE Smith U-Bolt Kit for Mounting 5.2K to 7K, Round Trailer Axles - 7" Long U-Bolts - Zinc part number CE23003 can be ordered online at or call 1-800-940-8924 for expert service.
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CE Smith Trailer Suspension Parts - CE23003

  • U-Bolt Kits
  • Boat Trailer
  • Snowmobile Trailer
  • Round Axle - 3 Inch
  • 7 Inch Long
  • 5200 lbs - 7000 lbs
  • 1/2 Inch Diameter
  • CE Smith

Mount your round, 3" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers.


  • Mounting kit attaches trailer axle to leaf springs
  • Galvanized plates and zinc-plated hardware resists rust and corrosion
  • Includes:
    • 4 U-bolts
    • 2 U-bolt plates for 1-3/4" springs
    • (8) 1/2" Hex nuts and washers
  • Spring seats (sold separately) required for mounting axle to leaf spring
  • Made in the USA


  • Application: 3" diameter axle
    • Typical 5,200-lb to 7,000-lb axle
  • U-bolt dimensions
    • Inner width: 3-1/8"
    • Length: 7"
    • Diameter: 1/2"

23003 CE Smith U-Bolt Kit for Mounting 5.2K to 7K, Round Trailer Axles - 7" Long U-Bolts - Zinc

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Video of CE Smith U-Bolt Kit for Mounting 5.2K to 7K, Round Trailer Axles - 7" Long U-Bolts - Zinc

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for CE Smith U-Bolt Kit for Round Trailer Axles Review

Speaker 1: Today, we'll be having a look at the CE Smith line of U-bolt mounting kits for mounting round trailer axles. Here's what our kit comes with. It's everything you need for replacing the U-bolts on a single axle on your trailer. We have 4 new U-bolts, you'll have 2 per side; 2 new plates, 1 per side; 8 new lock washers, you'll be using 4 for each side of the trailer; and 8 new nuts, again 4 for each side of the trailer.You can see how well our U-bolts grip around the contours of our axle. This'll keep the axle firmly attached to our leaf springs, so we don't have to worry about it slipping and sliding.Now because we have the zinc and the galvanized finish on our plate and our hardware, this will better protect them from corrosion from the elements, especially salt spray. It's not an issue if you decide to use them on a boat trailer such as this one.Now many of our customers have had to make a second phone call or send an email to us after they bought a new axle for their trailer because they found, once they tried to remove the old one or put the new one on, that they couldn't get their factory U-bolts off.

They had to cut them off, and now they're searching for a replacement. This kit will be a perfect solution for this problem here.Now many of our customers compared these to the Redline line of U-bolt kits. Now the main difference you're going to see between this one and those is that those do not have the galvanized or the zinc finish on the plates or the hardware, which will cause them to rust out faster.As you can see, we already have our new axle sitting on top of our leaf springs. Now this kit could work for an axle that sits on top or below your leaf springs. It works for both applications.

You don't need to worry if yours resides below, you can still use this kit for that.We'll start by taking our new U-bolts and dropping them over our axle on either side of our leaf spring. Now we'll take our new plate. We want to make sure that this flange right here faces down, this hole here in the center lines up with the alignment pin on our leaf spring, and we'll insert our U-bolts through the holes. Place on our lock washers, and we'll put that on our nuts.Now we can start to tighten our hardware, making sure we tighten them evenly as possible. Now we'll torque our hardware again, making sure we alternate to ensure that we're doing it as evenly as possible.And that completes our look at the CE Smith line of U-bolt kits for mounting round trailer axles..

Customer Satisfaction Score:

Customer Reviews

CE Smith U-Bolt Kit for Mounting 5.2K to 7K, Round Trailer Axles - 7" Long U-Bolts - Zinc - CE23003

Average Customer Rating:  4.6 out of 5 stars   (242 Customer Reviews)

Mount your round, 3" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates, nuts, and washers included. Zinc plating resists rust and corrosion - great for boat trailers.


First, trailer is a first rate company. I had a damaged box which resulted in some missing bolts and lock washers. etrailer quickly got replacements parts out. Both shipments were rapidly shipped and the U-bolt kit was top notch. Great customer service!


The product themselves are quality however, the customer service and shipping is what was dissapointing. I originally ordered 4 items. I was told only one item was on backorder. Not a big deal. I checked a week later on the backorder and was told that they did not know when an item would come from the namufactuere. However, it was a different item from the first. So two items were not available and turned out to not be available. It was a lack of communication and I had to figure this out by calling after waiting a week and several misguided emails. Next was the packaging. It was all broken up and taped when I got it. Whoever packaged these items threw 4 heavy leaf springs and 2 sets of U-bolts into a box without securing them. They arrived but the two U-bolt packedges were previouly opened and sealed with masking tape and i'm missing all the nuts and lock washers from one package. The box could have come open during shipment but they were not secured inside the box at all, which led to the catstrophy inside the box. Due to all this, I will probably not order again from this site.


These 2 new spring sets replaced OEM Dexter set used by Keystone. They worked fine but appear to be a bit thinner steel than the OEM unit that failed on one leaf. I asked the etrailer rep and was told they are rated for my RV so we will see.


Good packaging. Great replacement for the old U-bolts.


Great service - as always.
Always my
go-to for anything “trailer”!


All the hardware I needed in one packag e.


The bolts worked great but the base plate was not drilled out enough to be able to fit, I had to reuse the old plates which worked fine.


easy to install great quality





I did not receive the U Bolts, they were not in the box with the other parts.



U bolts were shipped separately, Still in spare parts havent used yet


Works great. Heavy duty and plated.



Very heavy duty - grade 8 Checked torque and zero movement - nuts stayed tight! Use the proper U-Bolt kit for your needs.


The u-bolts and plates are of excellent quality. Bolts are yellow cadmium plated and the plates are hot dip galvanized. The fit was perfect, no issues at all during assembly.

Randy R.


One long trip out west and no issues. Very good quality part for the price.


Very fast shipping, Rob was very helpful and made sure parts got shipped that same day even though I put the order in late that afternoon. Great job Rob and everyone at e-trailer!!!


Components well-built and appears very durable.


Quinn did sn excellent job on my order We compared pricing and informed me as to del8very times, I received email updates and was informed as to when to expect delivery. Oustanding and professional customer service, Highly recommend etrailer your trailer needs.


The parts were right the first time, and very nicely priced. And very fast shipping. Will definitely buy from them again.


Received my parts today and after examining everything all looks good.
The quality of parts looks excellent and can't wait to start installing them.
Shipping was fast and arrived as they said.
Great company to buy with.
Will was very helpful and very knowledgeable about parts.
If you call would definitely ask for Will.


Very good quality.


Good selection of suspension parts to get our 2019 Jayco Eagle fifth wheel ready for a road trip


Great parts and quick delivery


Great quality item, as always etrailer has the fastest shipping 5 star


Great kit contains everything


Missing 2 Lock washers

Etrailer Expert

Jenny N.


Oh no! Our Customer Service team will reach out.


Order came in a timely manner


Great service. Excellent products


The UBolts plates didn’t fit had to use my old ones. The span was not wide enough for the u bracket to sit start through.

Show More Reviews

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